feat: implement staff management and subscription system

- Added StaffController for managing clinic staff, including listing, creating, updating, and toggling staff status.
- Created ClinicStaff entity and repository for staff data handling.
- Developed SubscriptionController to manage subscription plans and periods, including trial subscriptions.
- Introduced SubscriptionPlan, SubscriptionPeriod, and ClinicSubscription entities for subscription management.
- Implemented SubscriptionService for handling subscription logic, including trial activation and subscription creation from payments.
- Added necessary repositories for subscription entities to facilitate data access and manipulation.

src/Payment/Entity/Payment.php

@@ -20,6 +20,7 @@ class Payment
 
     public const TYPE_APPOINTMENT   = 'appointment';
     public const TYPE_SUBSCRIPTION  = 'subscription';
+    public const TYPE_SMS_WALLET    = 'sms_wallet';
 
     #[ORM\Id]
     #[ORM\GeneratedValue]
@@ -64,6 +65,9 @@ class Payment
     #[ORM\Column(name: 'callback_ip', type: 'string', length: 45, nullable: true)]
     private ?string $callbackIp = null;
 
+    #[ORM\Column(type: 'json', nullable: true)]
+    private ?array $metadata = null;
+
     #[ORM\Column(name: 'created_at', type: 'integer')]
     private int $createdAt;
 
@@ -96,8 +100,10 @@ class Payment
     public function getReferenceId(): ?string  { return $this->referenceId; }
     public function getFrontendAddress(): ?string { return $this->frontendAddress; }
     public function getCallbackIp(): ?string   { return $this->callbackIp; }
+    public function getMetadata(): ?array      { return $this->metadata; }
 
     public function setAppointment(?Appointment $a): self    { $this->appointment = $a; return $this; }
+    public function setMetadata(?array $metadata): self      { $this->metadata = $metadata; $this->touch(); return $this; }
     public function setGatewayToken(?string $t): self        { $this->gatewayToken = $t; $this->touch(); return $this; }
     public function setReferenceId(?string $r): self         { $this->referenceId = $r; $this->touch(); return $this; }
     public function setStatus(string $s): self               { $this->status = $s; $this->touch(); return $this; }